From 172060877a80d5f1c5bd725dafd041c7180e9a28 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Wed, 4 Jun 2014 18:57:31 +0900
Subject: add Hash#to_h; ref #2348

---
 mrbgems/mruby-hash-ext/mrblib/hash.rb | 11 +++++++++++
 mrbgems/mruby-hash-ext/test/hash.rb   |  6 ++++++
 2 files changed, 17 insertions(+)

diff --git a/mrbgems/mruby-hash-ext/mrblib/hash.rb b/mrbgems/mruby-hash-ext/mrblib/hash.rb
index 504848a74..9da08dc3a 100644
--- a/mrbgems/mruby-hash-ext/mrblib/hash.rb
+++ b/mrbgems/mruby-hash-ext/mrblib/hash.rb
@@ -182,4 +182,15 @@ class Hash
     end
     nil
   end
+
+  ##
+  #  call-seq:
+  #     hsh.to_h     -> hsh or new_hash
+  #
+  #  Returns +self+. If called on a subclass of Hash, converts
+  #  the receiver to a Hash object.
+  #
+  def to_h
+    self
+  end
 end
diff --git a/mrbgems/mruby-hash-ext/test/hash.rb b/mrbgems/mruby-hash-ext/test/hash.rb
index 62cfc8856..2bc5b911a 100644
--- a/mrbgems/mruby-hash-ext/test/hash.rb
+++ b/mrbgems/mruby-hash-ext/test/hash.rb
@@ -115,3 +115,9 @@ assert("Hash#key") do
   assert_nil h.key('nil')
   assert_equal 'nil', h.key(nil)
 end
+
+assert("Hash#to_h") do
+  h = { "a" => 100, "b" => 200 }
+  assert_equal Hash, h.to_h.class
+  assert_equal h, h.to_h
+end
-- 
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